Transmitted wavefront detection apparatus and method for meniscus lens

A detection device and a technology of transmitted waves, applied in the field of optical measurement, can solve the problem of not considering the influence of the processing accuracy of the meniscus lens, etc., and achieve the effects of a simple data processing method, strong engineering application value, and simple measurement steps

Active Publication Date: 2015-12-16
XIAN TECHNOLOGICAL UNIV
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Problems solved by technology

Chen Qinfang and others from Xi'an Institute of Optics and Mechanics, Chinese Academy of Sciences ("Double doublet lens method to detect large relative aperture convex aspheric lens", Acta Photonica Sinica, 2014, 43(3): 0322004-1~5) proposed to use the method

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  • Transmitted wavefront detection apparatus and method for meniscus lens
  • Transmitted wavefront detection apparatus and method for meniscus lens
  • Transmitted wavefront detection apparatus and method for meniscus lens

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings, a meniscus lens transmission wavefront detection device, the device includes an interferometer 1 sequentially arranged along the optical path, a computational hologram image 3 , the measured meniscus lens 4 and the spherical reflector 5; the aperture and curvature radius of the spherical reflector 5 are correspondingly selected according to the parameters of the meniscus lens 4. One end of the interferometer 1 is equipped with a spherical standard lens 2, and the standard lens is based on the measured meniscus lens 5 and the calculated holographic image 3 Choose a different F number, the F number is the reciprocal of the relative aperture of the standard lens.

[0037] Computational holography image 3 Fixed on the second fifth-dimensional adjustment frame 7, calculate the hologram image 3 The whole composed of the second five-dimensional adjustment mount 7 is fixed...

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Abstract

The invention relates to a transmitted wavefront detection apparatus and method for a meniscus lens. The transmitted wavefront detection apparatus for a meniscus lens comprises an interferometer, a computed hologram, a to-be-detected meniscus lens and a spherical surface reflector, which are all connected in sequence along an optical path. The light emitting end of the interferometer is provided with a standard lens. The transmitted wavefront detection method comprises the following steps: firstly, obtaining a measurement total error W2 of the spherical surface reflector; secondly, obtaining a measurement total error W1 of the meniscus lens; and thirdly, processing data according to a first detection result W1 and a second detection result W2. The invention provides a novel, simple accurate method for measuring a transmitted wavefront of a meniscus lens. By means of the computed hologram, a holographic sheet can be in alignment with the interferometer, spherical aberration caused by the meniscus lens and the spherical surface reflector can be compensated, and then the whole detection system can achieve zero detection. The method provides simple measuring steps and provides an easy data processing means, and has remarkable engineering application values.

Description

technical field [0001] The invention belongs to the technical field of optical measurement, and in particular relates to a transmission wavefront detection device and a detection method of a meniscus lens. Background technique [0002] In the surface shape detection of convex aspheric surface, meniscus lens is a very widely used optical element. The transmitted wavefront error of the meniscus lens will directly affect the surface shape detection accuracy of the aspheric surface. The transmitted wavefront of the meniscus lens is affected by many factors, such as the surface error of the two spherical surfaces of the meniscus lens, the distribution of the refractive index of the meniscus lens, and the distribution of material uniformity. Especially in the meniscus lens with large aperture, the measurement of its transmitted wavefront has always been a difficult problem in optical inspection. [0003] Ma Jie et al. from the Nanjing Institute of Astronomical Optics Technology ...

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Application Information

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IPC IPC(8): G01B11/24G01M11/02
Inventor 李世杰田爱玲王红军刘丙才朱学亮王春慧
Owner XIAN TECHNOLOGICAL UNIV
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